The content of the invention
Technical problem
The present invention is based on to improve to have additional free functions of pivoting and be particularly used for having and refers to class in beginning
The problem of the braking accessory of the fitting system of type, especially, the present invention is based on the additional freedom provided for braking accessory
The problem of the firm and zero-lash locking of functions of pivoting, the locking is simultaneously optimised in terms of weight and structure space.
Solution
The problem is solved according to the present invention by means of a kind of braking accessory and by means of a kind of seat.
Improvement that can be independent or in combination with one another is the theme of dependent claims.
Due to the free functions of pivoting added, the braking accessory has two locking mechanisms.First locking mechanism is used for
The gradient of the backrest of seat is adjusted within comfort tuning scope;Second locking mechanism is used in first locking mechanism
Backrest is additionally caused freely to pivot during locking, so as to contribute to entering back seat.
Due to the 3rd set and assembling parts department, locking cam, the side to be hinged in the second pin joint on the 3rd set and assembling parts department
Formula is connected to locking cam in the 3rd pin joint and the coupling device and ratchet limit of ratchet is connected in the 4th pin joint
Determine four-bar chain, optimised in terms of cost and weight and with additional free functions of pivoting braking accessory is provided.Root
Can replace regulation accessory for adjusting back gradient and from DE 20 2,010 015 according to the braking accessory of the present invention
Free pivotal fittings in 093 U1 in known fitting system, and its here takes less structure space.
Fitting system, particularly it is used to that for the fitting system that the backrest of seat is attached to seat support portion basis can be included
One or more of the invention, particularly two braking accessories.
Free functions of pivoting is locked by means of detent system, wherein, in the second pin joint on the 3rd set and assembling parts department
Locking cam, be connected in the 3rd pin joint locking cam in hinged way and be connected to ratchet in the 4th pin joint
Coupling device and the ratchet limit four-bar chain.As a result, ratchet can be locked in the region of dead-centre position, stopped described
In point position, acted in the way of opening power on ratchet, particularly impact force can by with it is extremely simple and it is effective just
Formula is supported.
The gear part of four-bar chain need not be connected to each other via pure swivel.In optimal way, the hinge of four-bar chain
One in contact is designed to rotate and slip joint, and remaining pin joint is designed to pure swivel.As a result, institute
Stating ratchet can be crossed dead-centre position and be locked.When the second pin joint is designed to rotate and slip joint and remaining hinge
When contact is designed to swivel, it is particularly effective.
If spring towards ratchet latched position direction to four-bar chain, especially locking cam prestress, and will lock
It is to contact with ratchet to determine cam pivots, due to rotate and slip joint and the caused clearance being necessarily present in four-bar chain not
With to the negative effect for locking degree of freedom in the course of normal operation of seat from clearance.Thus, as translation direction
On peak excursion result, the ratchet locking cam of the clamping surface being designed to preferably in self-locking device rotating and
Slip joint is clamped on the locking surface of the first set and assembling parts department in the case of need not being arranged in zero-lash mode.
Dead-centre position can be by being located at vacation between the second pin joint and the 4th pin joint in the lock-out state of ratchet
Think the 3rd pin joint on connecting line or the 3rd pin joint between connecting line and ratchet and in a particularly simple way
Produce.
The locking cam that braking accessory is preferably pivoted by being in reverse to the power of spring is unlocked to unlock ratchet, also, at this
During, four-bar chain causes ratchet to move towards the direction of its unlocked position.For this purpose, locking cam includes being rotatably mounted
Bearing journal in the opening of the 3rd set and assembling parts department, therefore form the second pin joint.Bearing journal preferably has particularly polygon
The heterointerface of shape form, so as to the handle being at least connected indirectly on the backrest of seat.
Support ring preferably connects, preferably fixedly connects, is especially welded onto the first set and assembling parts department.Support ring is relative to first
Set and assembling parts department supports the 3rd set and assembling parts department.As a result, the 3rd set and assembling parts department necessarily to be mounted directly on the first set and assembling parts department, and this is significantly assisted in
Free functions of pivoting is also incorporated on disc braking accessory, the disc braking accessory is known per se and initial designs
Not have free functions of pivoting.
The clearance being alternatively present in braking accessory can preferably by the supporting surface and the 3rd accessory of support ring
The inner surface being open is supported the fact that non-circular design to be adjusted so that in this way, in portion by fastening in support ring
To the rotation of the first set and assembling parts department as described before support ring, the clearance can be conditioned.It is this adjust clearance mode for example from
Known to the B4 of DE 100 41 604.
Specific embodiment
Seat 1 for motor vehicles has seat support portion 3 and backrest 4, and the backrest 4 can be at it relative to seat support
Adjust in the gradient in portion 3.By fitting system 9, backrest 4 can be adjusted first in its gradient relative to seat support portion 3,
As a result, multiple use positions are defined, and secondly backrest 4 can be pivoted freely, i.e. can be pivoted forwardly under non-use position,
For example to facilitate access to back seat.Fitting system 9 has accessory on every side of seat.
First accessory 10 has two locking mechanisms, first locking mechanism the first set and assembling parts department 11 and the second set and assembling parts department 12 it
Between work.Additionally, implementing the second locking mechanism for being integrated free pivot attachment in the braking for being connected to the first set and assembling parts department 11
Work between the set and assembling parts department 74 of plate 115 and the 3rd.In the variant of example embodiment, keep plate 115 is integrated into the first set and assembling parts department
In 11.
Second accessory 10a is realized without additional free pivot attachment, that is to say, that it is disk that the accessory only has
The first locking mechanism of shape unit.Two accessories 10,20 are via the actuated element for being designed as latch release shaft 7 with DE 10 2,008 026
Mode described in 176 A1 is coupled each other.Latch release shaft 7 limits the direction item for cylindrical coordinate.With free pivot attachment
The first accessory 10 hereinafter referred to as braking accessory 10.
In order to adjust the gradient of backrest 4, the solution being arranged horizontally in the transitional region between seat support portion 3 and backrest 4
Lock shaft 7 is for example actuated manually by means of action bars 5 or is activated in electronic mode for example by means of motor.In vehicle seat
On the both sides of chair 1, latch release shaft 7 is bonded in this way in two accessories 10,10a so that latch release shaft 7 is around its longitudinal axis
Rotate and unlock two first locking mechanisms of accessory 10,10a, so that the gradient of backrest 4 can change.In the process
In, keep locking as the free pivot attachment of the second locking mechanism of braking accessory 10.
By actuation handle 8, the free pivot attachment and the second accessory 10a for braking accessory 10 is unlocked, and therefore leans on
The back of the body can be pivoted freely.In this process, the between first set and assembling parts department 11 and the second set and assembling parts department 12 of braking accessory 10
One locking mechanism keeps locked.
Braking accessory 10 is described below, that is to say, that the first accessory with extra free pivot attachment.Braking
First set and assembling parts department 11 and the second set and assembling parts department 12 of accessory 10 relative to each other can rotate around axis A.Axis A heres and unblock
The central axis alignment of axle 7.Two difference approximate descriptions of set and assembling parts department 11 and 12 are disc.Two set and assembling parts departments 11 and 12 preferably by
The metal that at least can harden in the zone, particularly steel are constituted.In order to absorb axial force, i.e. in order to by set and assembling parts department 11
Together with 12 axially retain, snap ring 13 is set.Preferably, snap ring 13 is made up of preferred unsclerotized metal, particularly steel.Card
Ring 13 preferably has essentially flat annular shape, but in alternative embodiments, the snap ring 13 can also have L-shaped
Profile, it has cylindrical cross-section and has flat, annular section in side.
Snap ring 13 is for example fixedly connected to two and is matched somebody with somebody by laser welding or another tightening technology known per se
One in part portion 11 and 12, in this example, be connected to the second set and assembling parts department 12 in outer zone section.By being arranged in perpendicular to axle
To the internal ring section in the plane in direction, snap ring 13 is outside in the footpath of the first set and assembling parts department 11 alternately through the insertion of slip ring
It is bonded in marginal area on the first set and assembling parts department 11, and does not hinder the relative motion of two set and assembling parts departments 11 and 12.Additionally, two are matched somebody with somebody
The inner surface of the face each other in part portion 11 and 12 is avoided foreign body and dust enters and avoids damaging.
Therefore snap ring 13 is clamped in two set and assembling parts departments 11 and 12 with the set and assembling parts department 11 or 12 of the snap ring is fixedly connected to
Another, another in described two set and assembling parts departments 11 and 12 can be moved relative to snap ring and previous set and assembling parts department.In structure
Aspect, therefore, the disc-shaped units of the sub-component as braking accessory 10 are formed together with two set and assembling parts departments 11 and 12 (with snap ring 13).
In the case where being mounted with to brake accessory 10, the second set and assembling parts department 12 is fixedly connected to chair by means of adapter 112
The structure of portions 3, that is to say, that fix relative to seat support portion.First set and assembling parts department 11 is permanently connected, is welded in this example
Keep plate 115, this will be described below.Keep plate 115 can lock onto the 3rd set and assembling parts department 74 by means of detent system,
This is described in more detail below.3rd set and assembling parts department 74 is rotatably mounted relative to the first set and assembling parts department 11.For this purpose, support ring
71 are welded to the first set and assembling parts department 11, and first set and assembling parts department 11 is pivotably supported the 3rd set and assembling parts department 74.3rd set and assembling parts department 74 is consolidated
Surely it is connected to the structure of backrest 4.However, the distribution of set and assembling parts department 12 and 74 can be exchanged, that is to say, that the 3rd set and assembling parts department 74 will
Fix relative to seat support portion, and the second set and assembling parts department 12 will be fixed relative to backrest.Braking accessory 10 is in backrest 4 and seat support portion
In power stream between 3.
The first locking mechanism of braking accessory 10 is designed as wherein the first set and assembling parts department 11 and the second set and assembling parts department 12 can be locked
To mutual accessory, as example, described in the B3 of DE 10 2,006 015 560, its disclosure in this respect is clearly incorporated to
Herein.The A1 of DE 10 2,010 020 013 also disclose this accessory.
Second set and assembling parts department 12 has guiding segments 14 (having four guiding segments in this example), and the guiding segments pass through
Paired straight guide surface laterally guides in radial directions in each case a capture pieces 16.Capture pieces 16 (show at this
One have four capture pieces 16 in example) in the structure space being limited between two set and assembling parts departments 11 and 12 relative to each other
Arranged offset (offsets in each case in this example 90 °).Capture pieces 16 are provided with tooth, the tooth energy on its radial outer end
Enough to engage (engagement) with the ring gear of the first set and assembling parts department 11, the ring gear of first set and assembling parts department 11 is the form of internal gear.Work as ring gear
When interacting with capture pieces 16, the first locking mechanism for braking accessory 10 is locked.In alternative embodiments, capture pieces 16
Quantity be 1,2,3 or more than 4.
Driver 21 is arranged in the central authorities of braking accessory 10.Driver 21 extends upward and around axle in the side of axis A
Line A is provided with the access portal for receiving latch release shaft 7.
The eccentric part 27 being arranged in the structure space being limited between set and assembling parts department 11 and 12 is located in torsion proof mode
In driver 21.Spring assembly 35 is arranged in one (the second set and assembling parts department 12 in this example) in two set and assembling parts departments 11 and 12
Central receiver in, and in this example external support on the central receiver.Spring assembly 35 acts on bias
On part 27, it is seated in the profile section of driver 21 in torsion proof mode by means of the spring assembly in this example
Act on side on eccentric part 27, the profile section has the design of general square shape cross section.The spring dress of this type
35 are put for example described in the B3 of DE 10 2,005 046 807, its disclosure in this respect is clearly expressly incorporated herein.By spring assembly
35 effects eccentric part 27 thereon is acted on radially displaceable capture pieces 16 and to the radially displaceable capture pieces 16
In being pressurized so that the radially displaceable capture pieces are pushed radially outwardly to be engaged on ring gear, so as to lock braking accessory 10
First locking mechanism.
Control panel 36 is shown in the structure space being disposed axially between the set and assembling parts department 11 of capture pieces 16 and first and at this
It is seated on eccentric part 27 in torsion proof mode in example.Control panel 36 has control track (having four in this example), institute
State control track to act on the lug 38 of each capture pieces 16 in each case.In this case, lug 38 is in axial side
Project from capture pieces associated there 16 upwards.In driver 21 and the eccentric part 27 by the driver drives and
In the case that control panel 36 is in reverse to power rotation (if mass dryness fraction) of spring assembly 35, control panel 36 radially-inwardly pulls capture pieces
16, that is to say, that be drawn out ring gear, and therefore brake that accessory 10 is unlocked and two set and assembling parts departments 11 and 12 can be relative to
One another around axis A rotations.Backrest 4 can pivot to be adjusted in terms of its gradient around axis A now, that is to say, that with
Take different use positions.
Dead ring 24 is fixedly connected to the end that the protrusion of driver 21 goes out outside the second set and assembling parts department 12.
After braking accessory 10 is fastened to seat 1, as long as freely pivot lock (being described below) not being unlocked,
First set and assembling parts department 11 is connected with backrest 4 (locking).Second set and assembling parts department 12 is fixedly connected to seat support portion 3 via adapter 112
Structure, that is, be fixed in seat support portion.However, the distribution of set and assembling parts department 11 and 12 can also be exchanged, that is to say, that the first set and assembling parts department 11
To be fixed in seat support portion, and the second set and assembling parts department 12 will be connected with backrest 4.Therefore, accessory 10 is braked in backrest 4 and seat support portion
In power stream between 3, and therefore two set and assembling parts departments 11 and 12 be preferably made up of metal, particularly steel.
The occupant of seat 1 enables to the single comfort requirement that the gradient of backrest is adapted to occupant.Backrest
Comfort conditioned scope is limited by the retainer 112a for being fixedly connected to adapter 112, and the adapter 112 is fixed on seat support portion
On, the retainer 112a is bonded between the first cam 120 of keep plate 115 and the second cam 130.The He of first cam 120
Second cam 130 is projected as function geometry, the circle in radial directions in the circular basic shape of keep plate 115
Shape basic configuration is extended concentrically about relative to axis A.The first stop surfaces 120a towards retainer 112a is in the first cam 120
Upper formation, and the second stop surfaces 130a towards retainer 112a formed on the second cam 130, in the stop surfaces
In each case in two end points of the comfort conditioned scope of backrest one at breasting retainer 112a and
Prevent from braking the further regulation of accessory 10.The distance between first stop surfaces 120a and the second stop surfaces 130a are more than
The size of the retainer 112a between described stop surfaces 120a, 130a, as a result, the comfort conditioned scope of backrest is defined.
Keep plate 115 by being pushed on the step cutting pattern of the first set and assembling parts department 11 relative to the concentric circular opens of axis A,
And the step cutting pattern is equally concentric relative to axis A.Keep plate 115 is preferably laser-welded to the first set and assembling parts department.Step
Diameter D with preferred 60mm, and in the application of the braking accessory 10 without free pivot attachment, the step is used for will
First set and assembling parts department 11 is connected on armchair structure, is preferably attached in the structure of backrest 4.
In addition to the disc-shaped units of the part with the first locking mechanism being included in, the braking accessory
10 also include the free pivot attachment as second locking mechanism.Two locking mechanisms can be operated independently of one another.3rd matches somebody with somebody
Part portion 74 is by means of being fastened to the support ring 71 of the first set and assembling parts department 11 in first set and assembling parts department 11 away from the second set and assembling parts department 12
That side on be installed on the first set and assembling parts department 11.3rd set and assembling parts department 74 of substantially plate shape is connected to the backrest structure of backrest 4, and
And in order to freely pivot what central authorities realized relative to the first set and assembling parts department 11, the 3rd set and assembling parts department 74 can be surrounded parallel to solution
The central axis A (being limited by support ring 71) of lock shaft 7 is pivoted.As long as no contrary description, all rotations described below are enclosed
Carry out around the rotation axiss parallel to axis A.
Support ring 71 has the basic geometry of annular, and it has the substantially constant cross section of periphery, the cross section
With in the upwardly extending web in the side of axis A, and, two web ends, corresponding alar part extends perpendicular to web.
Two alar part heres extend in radial direction and in opposite directions from web end, and therefore cross section substantially has Z
Shape.
The clearance being optionally present in braking accessory 10 can pass through the supporting surface and the 3rd set and assembling parts department of support ring 71
Be that the inner surface of the supporting opening of non-circular design is adjusted in 74, and by fastening in support ring 71, particularly laser welding
The mode of rotation to before the first set and assembling parts department 11, clearance can be conditioned.This mode for adjusting clearance is for example from DE 100 41
Known to 604 B4.
When using seat 1, the 3rd set and assembling parts department 74 is locked into the first set and assembling parts department 11.For this purpose, be fastened to first matching somebody with somebody
The keep plate 115 in part portion 11 has the projection 140 as another function geometry, and the projection 140 is dashed forward in radial directions
Go out the basic geometry of circle of keep plate 115 and be rotatably installed in the 3rd set and assembling parts department with by means of bolt 82
Ratchet 80 on 74 that side towards the first set and assembling parts department 11 interacts.
Ratchet 80 has the basic geometry similar to L shape, and it has long alar part and short limb portion.In the back of the body of long alar part
Circular port in the end regions in short limb portion is used to receive bolt 82 and form ratchet together with the bolt
Supporting-point in 80 the first pin joint D1 on the 3rd set and assembling parts department 74.Company between the long alar part of ratchet 80 and short limb portion
In connecing region, locking cam 80a is formed for being interacted with the locking surface 140b of projection 140.In order to by the 3rd accessory
Portion 74 locks onto the first set and assembling parts department 11, and locking cam 80a is supported on the locking surface 140b of projection 140 in free pivotal orientation
On.
By the way that when having completed and when reaching the use position of backrest 4 again Yi Dan freely pivoting, eccentric bolt 84 runs
Against the stayed surface 140a of projection 140, the eccentric bolt 84 as the retainer on the 3rd set and assembling parts department 74 is used to limiting the
Pivoting action of three set and assembling parts departments 74 in the pivotal orientation backward of backrest 2.In order to compensate manufacturing tolerance, eccentric bolt 84 is in its axle
There is step on direction, the step is relative to each other eccentric substantially cylinder-shaped step.The insertion of eccentric bolt 84
Cylindrical portion in the circular port of three set and assembling parts departments 74 the certain radial disbalance of radial deflection away from and be displaced to eccentric bolt 84
Another cylindrical portion, wherein last-mentioned cylindrical portion contacts stayed surface 140a when reaching again using position.When inclined
When cylindrical portion of the heart bolt 84 in the 3rd set and assembling parts department 74 of insertion rotates, in contacting the cylindrical portion of stayed surface 140a
Thus heart point moves along circular path, and the circular radius corresponds to eccentric throw.During installation fitting, eccentric bolt 84
The nominal position already at the 3rd set and assembling parts department 74 relative to the first set and assembling parts department 11 is rotated up relative to the 3rd set and assembling parts department 74;Partially
Heart bolt 84 is then secured on the 3rd set and assembling parts department 74, is especially welded onto on the 3rd set and assembling parts department 74.
In order to compensate manufacturing tolerance, bolt 82 can also be constructed by way of corresponding bias step.Bolt
Cylindrical portion in the circular port of 82 set and assembling parts department 74 of insertion the 3rd then has relative to for installing the cylindrical portion of ratchet 80
The parallel central axis for radially of the central axis offseting, the parallel central axis limits the first pin joint D1.As a result, spiral shell is supported
The eccentric throw of bolt 82 is defined.When cylindrical portion of the bolt 82 in the 3rd set and assembling parts department 74 of insertion rotates, the first hinge
Contact D1 is moved along circular path, and the circular radius corresponds to eccentric throw.During installation fitting, support holes 82 are relative
The first pin joint D1 is rotated up in the 3rd set and assembling parts department 74 reached its optimum position, and ratchet 80 by means of locking cam
The maximum of 80a is engaged and is bonded on the locking surface 140b of projection 140 in gapless mode, in this example, in self-locking
In fixed angular range or alternately outside the angular range of self-locking;Bolt be then attached to the 3rd set and assembling parts department 74,
Especially it is welded to the 3rd set and assembling parts department 74.
Locking cam 90 is rotatably being matched somebody with somebody at the second pin joint D2 being spaced apart with the first pin joint D1 towards first
It is installed on the 3rd set and assembling parts department 74 on that side in part portion 11.For this purpose, locking cam 90 has at one end bearing journal
90a, the bearing journal 90a are vertically projected from locking cam 90, are extended parallel to axis A and inserted by means of bushing 94
In the opening of the 3rd set and assembling parts department 74.The free end of bearing journal 90a projects through the 3rd set and assembling parts department 74, also, away from the
On the side of one set and assembling parts department 11, the free end of the bearing journal 90a is substantially several in the basic plate of the 3rd set and assembling parts department 74
What is projected in shape.The free end of bearing journal 90a has abnormity design, particularly polygonal design.It is formed with correspondence to match somebody with somebody
The part of profile can be promoted in the axial direction so that being provided in bearing journal 90a and between pushing mechanism antitorque
The connection for turning.In this example, it is bar (not shown in the accompanying drawings) by pushing mechanism, the bar is pulled and operability via cable
Be connected to handle 8, the handle 8 is fastened in the upper area of backrest 4.The actuating of handle 8 cause bearing journal 90a and
And hence in so that locking cam rotates around the second pin joint D2.
Coupling device 98 with flat, elongated basic configuration is connected at first end in the first pin joint D3
That end away from bearing journal 90a of locking cam 90.The second end of coupling device 98 is connected to spine in the 4th pin joint D4
The short limb portion of pawl 80.
3rd pin joint D3 is formed by cylindrical journal 90b, and cylindrical journal 90b deviates from locking cam 90
The end of bearing journal 90a projects and is bonded in the elongated hole of the first end of coupling device 98 parallel to axis A.Due to
The pairing of the elongated hole of cylindrical journal 90b and coupling device 98, the 3rd pin joint D3 is designed as rotating and slip joint, and because
This, in addition to pure rotational motion, the 3rd pin joint D3 also allow between coupling device 98 and locking cam 90 by thin
The translation that long hole geometry is limited.
4th pin joint D4 is by being inserted through the circular port of the second end of coupling device 98 and the short limb portion of ratchet 80
End regions in circular port rivet 96 formed and to produce pure swivel in the way of rivet.
The ratchet 80 that is arranged in the first pin joint D1 on the 3rd set and assembling parts department 74, it is arranged in the second pin joint D2 the
Locking cam 90 on three set and assembling parts departments 74 and be connected in articulated manner in the 3rd pin joint D3 locking cam 90 and
The coupling device 98 for being connected to ratchet 80 in 4th pin joint D4 in articulated manner limits essentially flat four-bar chain (its coupling
To the 3rd set and assembling parts department 74), the four-bar chain is used to unlocking and locking free functions of pivoting.
The lid 78 being fastened on the 3rd set and assembling parts department 74 covers at least in part the above-mentioned various pieces of free pivot attachment simultaneously
And the part is protected from pollution.In addition to being arranged in the hole of the 3rd set and assembling parts department 74, bolt 82, locking cam 90
Supported with eccentric bolt 84 or in the relative sectional hole patterns in lid 78.
Under the lock-out state using position, ratchet 80 has been engaged, i.e. locking cam 80a is supported on locking surface
On 140b.Effective spring 92 is with (inverse in Fig. 9 in the direction for contacting ratchet 80 between locking cam 90 and the 3rd set and assembling parts department 74
Clockwise) on moment of torsion act on locking cam 90.Thus ratchet 80 is maintained at its lock under normal maneuvering load
Positioning is put.3rd pin joint D3 is located on the imaginary connecting line L between the second pin joint D2 and the 4th pin joint D4 or (depends on
In tolerance position) slightly it is located between connecting line L and ratchet 80.Thus locking cam 90 and coupling device 98 are actually oriented in one
On bar line.Cam 90 is laterally supported on ratchet 80 so that the 3rd pin joint D3 can not be further towards the direction of ratchet 80
It is mobile.As a result, four-bar chain is in locking (stop) position;Due to locking cam 90 and the extended position and cam of coupling device 98
90 are supported on ratchet 80, even if high impact force is acted on can not open on ratchet 80 ratchet 80.As the 3rd pin joint D3
When being designed as rotating with slip joint, under collision accident, path for translation that is little within a fitting, limiting is through until supporting
The edge of the elongated hole of axle journal 90a breastings coupling device 98.
During free functions of pivoting is unlocked, by actuation handle 8, locking cam 90 is in reverse to the power of spring 92 and is pivoted
Away from ratchet 80.3rd pin joint D3 is moved on that side away from ratchet 80 of connecting line L.By means of coupling device 98, lock
Determine cam 90 and ratchet 80 pulled out into latched position, and therefore ratchet 80 locking cam 80a no longer breasting locking surface 140b,
And the 3rd set and assembling parts department 74 can be moved together with backrest in free pivotal orientation.Backrest 4 can be pivoted freely.If such as it
Front the 3rd described pin joint D3 is located between connecting line L and ratchet 80 under the lock-out state of free pivot attachment, the 3rd hinge
Contact D3 is designed as rotating and slip joint enables the 3rd pin joint D3 during unblock operation beyond extended position,
That is, connecting line L.In a modified embodiment, in other pin joints D1, D2, D4 replaces the 3rd pin joint D3 to be designed as
Rotate and slip joint.Remaining pin joint is designed as pure swivel.
In order to allow to guarantee under all tolerance conditions to unlock free functions of pivoting, ratchet 80 being capable of pivot in the direction of the opening
Turn slightly farther.
During free pivot action, the locking cam 80a of ratchet 80 is leaned against in the radially outside boundary of projection 140 and edge
The radially outside boundary to slide.Even if handle 8 after little free pivoting angle therefore, it is possible to also remaining un-activated.The
Three set and assembling parts departments 74 are pivoted back to reverse order and locked with therefore backrest 4.
The fixing spring 86 for being fastened to bolt 82 is dashed forward by spring arm 86a with prestress breasting in the axial direction
Play 140.If the 3rd set and assembling parts department 74 is pivoted forwardly to big degree, spring arm 86a leaves projection 140 and in ratchet 80
Flick on direction, as a result, the spring arm is prevented from after stayed surface 140 and engages.
According to the present invention, projection 140 is integrally formed on keep plate 115, i.e. projection forms keep plate with material cell
115 one portion and not the part for individually producing for retrospectively fastening.First cam 120 and the second cam 130 are preferably
It is integrally formed on keep plate 115 (or in support ring 71).
Various embodiments for projection 140 and ratchet 80 are possible.In a modified embodiment, ratchet 80 can have
There are the multiple teeth with the multiple tooth steric interactions in projection 140.
No matter independent the feature disclosed in description, claims and drawing more than is or combination is for various improvement
Mode realizes it being very important for the present invention.
Reference numerals list
1 seat
3 seat support portions
4 backrests
5 action bars
7 latch release shafts
8 handles
9 fitting systems
10 first accessories, braking accessory
The accessories of 10a second
11 first set and assembling parts departments
12 second set and assembling parts departments
13 snap rings
14 guiding segments
16 capture pieces
21 drivers
24 dead rings
27 eccentric parts
35 spring assemblies
36 control panels
38 lugs
71 support rings
74 the 3rd set and assembling parts departments
78 lids
80 ratchets
80a locking cams
82 bolts
84 eccentric bolts
86 fixing springs
86a spring arms
90 locking cams
90a bearing journals
90b axle journals
92 springs
94 bushings
96 rivets
98 coupling devices
112 adapters
112a retainers
115 keep plates
120 first cams
The stop surfaces of 120a first
130 second cams
The stop surfaces of 130a second
140 projections
140a stayed surfaces
A axis
D diameters
The pin joints of D1 first
The pin joints of D2 second
The pin joints of D3 the 3rd
The pin joints of D4 the 4th
L connecting lines (D2-D4)